3,446 research outputs found
Shallow Triple Stream Three-dimensional CNN (STSTNet) for Micro-expression Recognition
In the recent year, state-of-the-art for facial micro-expression recognition
have been significantly advanced by deep neural networks. The robustness of
deep learning has yielded promising performance beyond that of traditional
handcrafted approaches. Most works in literature emphasized on increasing the
depth of networks and employing highly complex objective functions to learn
more features. In this paper, we design a Shallow Triple Stream
Three-dimensional CNN (STSTNet) that is computationally light whilst capable of
extracting discriminative high level features and details of micro-expressions.
The network learns from three optical flow features (i.e., optical strain,
horizontal and vertical optical flow fields) computed based on the onset and
apex frames of each video. Our experimental results demonstrate the
effectiveness of the proposed STSTNet, which obtained an unweighted average
recall rate of 0.7605 and unweighted F1-score of 0.7353 on the composite
database consisting of 442 samples from the SMIC, CASME II and SAMM databases.Comment: 5 pages, 1 figure, Accepted and published in IEEE FG 201
Logical Message Passing Networks with One-hop Inference on Atomic Formulas
Complex Query Answering (CQA) over Knowledge Graphs (KGs) has attracted a lot
of attention to potentially support many applications. Given that KGs are
usually incomplete, neural models are proposed to answer logical queries by
parameterizing set operators with complex neural networks. However, such
methods usually train neural set operators with a large number of entity and
relation embeddings from zero, where whether and how the embeddings or the
neural set operators contribute to the performance remains not clear. In this
paper, we propose a simple framework for complex query answering that
decomposes the KG embeddings from neural set operators. We propose to represent
the complex queries in the query graph. On top of the query graph, we propose
the Logical Message Passing Neural Network (LMPNN) that connects the
\textit{local} one-hop inferences on atomic formulas to the \textit{global}
logical reasoning for complex query answering. We leverage existing effective
KG embeddings to conduct one-hop inferences on atomic formulas, the results of
which are regarded as the messages passed in LMPNN. The reasoning process over
the overall logical formulas is turned into the forward pass of LMPNN that
incrementally aggregates local information to predict the answers' embeddings
finally. The complex logical inference across different types of queries will
then be learned from training examples based on the LMPNN architecture.
Theoretically, our query-graph representation is more general than the
prevailing operator-tree formulation, so our approach applies to a broader
range of complex KG queries. Empirically, our approach yields a new
state-of-the-art neural CQA model. Our research bridges the gap between complex
KG query answering tasks and the long-standing achievements of knowledge graph
representation learning.Comment: Accepted by ICLR 2023. 20 pages, 4 figures, and 9 table
A general formula of the effective potential in 5D SU(N) gauge theory on orbifold
We show a general formula of the one loop effective potential of the 5D SU(N)
gauge theory compactified on an orbifold, . The formula shows the case
when there are fundamental, (anti-)symmetric tensor and adjoint
representational bulk fields. Our calculation method is also applicable when
there are bulk fields belonging to higher dimensional representations. The
supersymmetric version of the effective potential with Scherk-Schwarz breaking
can be obtained straightforwardly. We also show some examples of effective
potentials in SU(3), SU(5) and SU(6) models with various boundary conditions,
which are reproduced by our general formula.Comment: 22 pages;minor corrections;references added;typos correcte
An apprach to generate large and small leptonic mixing angles
We take up the point of view that Yukawa couplings can be either 0 or 1, and
the mass patterns of fermions are generated purely from the structure of the
Yukawa matrices. We utilize such neutrino as well as charged leptonic textures
which lead to (maximal) mixing angles of in each sector for relevant
transitions. The combined leptonic CKM mixing angles are
which lead to very small relevant to solar neutrino and LSND
experiments. We propose that on the other hand the absence of the charged
leptonic partner of the sterile neutrino maintains the angle from the
neutrino sector for the transition and hence
atmospheric neutrino anomaly is explained through maximal mixing
On the gravitational field of static and stationary axial symmetric bodies with multi-polar structure
We give a physical interpretation to the multi-polar Erez-Rozen-Quevedo
solution of the Einstein Equations in terms of bars. We find that each
multi-pole correspond to the Newtonian potential of a bar with linear density
proportional to a Legendre Polynomial. We use this fact to find an integral
representation of the function. These integral representations are
used in the context of the inverse scattering method to find solutions
associated to one or more rotating bodies each one with their own multi-polar
structure.Comment: To be published in Classical and Quantum Gravit
Visibility diagrams and experimental stripe structure in the quantum Hall effect
We analyze various properties of the visibility diagrams that can be used in
the context of modular symmetries and confront them to some recent experimental
developments in the Quantum Hall Effect. We show that a suitable physical
interpretation of the visibility diagrams which permits one to describe
successfully the observed architecture of the Quantum Hall states gives rise
naturally to a stripe structure reproducing some of the experimental features
that have been observed in the study of the quantum fluctuations of the Hall
conductance. Furthermore, we exhibit new properties of the visibility diagrams
stemming from the structure of subgroups of the full modular group.Comment: 8 pages in plain TeX, 7 figures in a single postscript fil
Inflation might be caused by the right
We show that the scalar field that drives inflation can have a dynamical
origin, being a strongly coupled right handed neutrino condensate. The
resulting model is phenomenologically tightly constrained, and can be
experimentally (dis)probed in the near future. The mass of the right handed
neutrino obtained this way (a crucial ingredient to obtain the right light
neutrino spectrum within the see-saw mechanism in a complete three generation
framework) is related to that of the inflaton and both completely determine the
inflation features that can be tested by current and planned experiments.Comment: 15 pages, 4 figure
Exact location of the multicritical point for finite-dimensional spin glasses: A conjecture
We present a conjecture on the exact location of the multicritical point in
the phase diagram of spin glass models in finite dimensions. By generalizing
our previous work, we combine duality and gauge symmetry for replicated random
systems to derive formulas which make it possible to understand all the
relevant available numerical results in a unified way. The method applies to
non-self-dual lattices as well as to self dual cases, in the former case of
which we derive a relation for a pair of values of multicritical points for
mutually dual lattices. The examples include the +-J and Gaussian Ising spin
glasses on the square, hexagonal and triangular lattices, the Potts and Z_q
models with chiral randomness on these lattices, and the three-dimensional +-J
Ising spin glass and the random plaquette gauge model.Comment: 27 pages, 3 figure
Complex Hyperbolic Knowledge Graph Embeddings with Fast Fourier Transform
The choice of geometric space for knowledge graph (KG) embeddings can have
significant effects on the performance of KG completion tasks. The hyperbolic
geometry has been shown to capture the hierarchical patterns due to its
tree-like metrics, which addressed the limitations of the Euclidean embedding
models. Recent explorations of the complex hyperbolic geometry further improved
the hyperbolic embeddings for capturing a variety of hierarchical structures.
However, the performance of the hyperbolic KG embedding models for
non-transitive relations is still unpromising, while the complex hyperbolic
embeddings do not deal with multi-relations. This paper aims to utilize the
representation capacity of the complex hyperbolic geometry in multi-relational
KG embeddings. To apply the geometric transformations which account for
different relations and the attention mechanism in the complex hyperbolic
space, we propose to use the fast Fourier transform (FFT) as the conversion
between the real and complex hyperbolic space. Constructing the attention-based
transformations in the complex space is very challenging, while the proposed
Fourier transform-based complex hyperbolic approaches provide a simple and
effective solution. Experimental results show that our methods outperform the
baselines, including the Euclidean and the real hyperbolic embedding models.Comment: Aceepted by the 2022 Conference on Empirical Methods in Natural
Language Processing (EMNLP22
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